Surface properties of perfluoroalkylethyl acrylate/n-alkyl acrylate copolymers

Journal of Applied Polymer ScienceVolume 73, Issue 9 p. 1741-1749 Surface properties of perfluoroalkylethyl acrylate/n-alkyl acrylate copolymers Masamichi Morita, Corresponding Author Masamichi Morita [email protected] R & D Department No. 2, Chemical Division, Daikin Industries, Ltd., 1-1 Nishi Hitotsuya, Settsu-shi, Osaka, 566-8585 JapanR & D Department No. 2, Chemical Division, Daikin Industries, Ltd., 1-1 Nishi Hitotsuya, Settsu-shi, Osaka, 566-8585 Japan===Search for more papers by this authorHiroko Ogisu, Hiroko Ogisu R & D Department No. 2, Chemical Division, Daikin Industries, Ltd., 1-1 Nishi Hitotsuya, Settsu-shi, Osaka, 566-8585 JapanSearch for more papers by this authorMotonobu Kubo, Motonobu Kubo R & D Department No. 2, Chemical Division, Daikin Industries, Ltd., 1-1 Nishi Hitotsuya, Settsu-shi, Osaka, 566-8585 JapanSearch for more papers by this author Masamichi Morita, Corresponding Author Masamichi Morita [email protected] R & D Department No. 2, Chemical Division, Daikin Industries, Ltd., 1-1 Nishi Hitotsuya, Settsu-shi, Osaka, 566-8585 JapanR & D Department No. 2, Chemical Division, Daikin Industries, Ltd., 1-1 Nishi Hitotsuya, Settsu-shi, Osaka, 566-8585 Japan===Search for more papers by this authorHiroko Ogisu, Hiroko Ogisu R & D Department No. 2, Chemical Division, Daikin Industries, Ltd., 1-1 Nishi Hitotsuya, Settsu-shi, Osaka, 566-8585 JapanSearch for more papers by this authorMotonobu Kubo, Motonobu Kubo R & D Department No. 2, Chemical Division, Daikin Industries, Ltd., 1-1 Nishi Hitotsuya, Settsu-shi, Osaka, 566-8585 JapanSearch for more papers by this author First published: 14 June 1999 https://doi.org/10.1002/(SICI)1097-4628(19990829)73:9<1741::AID-APP15>3.0.CO;2-FCitations: 120Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onEmailFacebookTwitterLinkedInRedditWechat Abstract Wetting behavior of perfluoroalkylethyl acrylate (FA)/n-alkyl acrylate (AA) copolymers with the various length of side chains of the AAs is discussed from a standpoint of surface molecular mobility. The copolymerization reactivity ratio indicates that these polymers are random copolymers. The surface properties were studied by measuring dynamic contact angle, static contact angle and freeze-dried X-ray photoelectron spectroscopy, and the bulk properties by wide-angle X-ray diffraction and differential scanning calorimetry. The advancing contact angles for water were independent of side-chain length of AAs and were almost constant at 120°. We have attributed this phenomenon to the orientation of perfluoroalkyl groups (Rf groups, CxF2x+1) in air, which is independent of side-chain length of AAs. On the contrary, the receding contact angles showed small values of about 45° when n numbers below 8 and increased when n numbers above 12. This can be explained as follows. High wettability during the receding process at the n numbers below 8 results from regression of Rf groups at the water–solid interface caused by minimization of the interface free energy. The low wettability during the receding process at the n numbers above 12 shows that Rf groups cannot regress due to its crystallization. This mechanism is also supported by other measurements. © 1999 John Wiley & Sons, Inc. J Appl Polym Sci 73: 1741–1749, 1999 REFERENCES 1 Bernent, M. K.; Zisman, W. A. J Phys Chem 1962, 66, 1207. 2 Sharfrin, E. G.; Zisman, W. A. J Phys Chem 1960, 64, 519. 3 Pittman, A. G.; Ludwig, B. A. J Polym Sci Part A-1 1966, 7, 3053. 4 Andrade, J. D.; Gregonis, D. E.; Smith, L. M. In Surface and Interfacial Aspects of Biomedical Polymers, Vol 1, Surface Chemistry and Physics, J. D. 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